使用废弃回收的多孔材料对声学性能进行比较研究,以提高环境可持续性
Vinoth Kumar Selvaraj1, Jeyanthi Subramanian2, Sri Sai Dutt3
1School of Mechanical Engineering, Vellore Institute of Technology, Chennai, Tamilnadu, India.
Scientific reports
|July 21, 2025
概括
这项研究开发了可持续的石膏复合材料,其中含有甲和回收聚氨 (RPU) 粉末,用于降低噪音. 优化的材料实现了0.3628的降噪系数 (NRC),证明了城市环境的有效吸声能力.
科学领域:
- 材料科学 材料科学 材料科学
- 声学工程 声学工程
- 环境科学 环境科学
背景情况:
- 城市噪音污染需要先进的降噪材料.
- 基于石膏的复合材料提供了一个可持续的,具有成本效益的解决方案,对环境的影响最小.
- 再利用废物材料,如回收硬型聚氨 (RPU) 粉末,可以支持循环经济.
研究的目的:
- 开发和优化基于石膏的新型复合材料,以提高声音吸收.
- 为了研究组合材料的声学性能,其中包含了米和RPU粉末.
- 通过废物利用来支持可持续的材料实践.
主要方法:
- 使用混合压方法来制造石膏复合材料.
- 高分辨率扫描电子显微镜 (HR-SEM) 和富里埃变换红外光谱 (FTIR) 分析了材料的组成和结构.
- 响应表面方法 (RSM) 优化了噪声降低系数 (NRC) 的配方.
- 使用COMSOL多物理和约翰逊-阿拉德模型进行的声学模拟评估了声音压力水平的降低.
主要成果:
- 最佳的复合材料配方包括5.3%重量维米和6.5%重量RPU粉末.
- 优化的复合材料实现了0.3628.8的降噪系数 (NRC).
- 声学模拟显示,有效的声压降低水平在200和2000Hz之间从17到58dB不等.
结论:
- 开发的基于石膏的复合材料显示了室内声学应用的巨大潜力.
- 这项研究强调了通过使用回收和天然材料来控制噪音污染的可持续方法.
- 这些发现有助于开发适用于城市环境的环保吸声材料.
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